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ActorContext.getParent for Java API #22413

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Johan Andrén 2017-03-16 09:30:00 +01:00 • committed by GitHub
parent 5ff44194a3
commit 2eb226ed32
213 changed files with 1319 additions and 1523 deletions
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89
akka-docs/rst/java/code/docs/stream/javadsl/cookbook/RecipeSeq.java
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@ -1,89 +0,0 @@
/**
* Copyright (C) 2015-2017 Lightbend Inc. <http://www.lightbend.com/>
*/
package docs.stream.javadsl.cookbook;
import akka.NotUsed;
import akka.actor.ActorSystem;
import akka.stream.ActorMaterializer;
import akka.stream.Materializer;
import akka.stream.javadsl.Sink;
import akka.stream.javadsl.Source;
import akka.testkit.JavaTestKit;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.CompletionStage;
import java.util.concurrent.TimeUnit;
public class RecipeSeq extends RecipeTest {
static ActorSystem system;
static Materializer mat;
@BeforeClass
public static void setup() {
system = ActorSystem.create("RecipeLoggingElements");
mat = ActorMaterializer.create(system);
}
@AfterClass
public static void tearDown() {
JavaTestKit.shutdownActorSystem(system);
system = null;
mat = null;
}
@Test
public void drainSourceToList() throws Exception {
new JavaTestKit(system) {
{
final Source<String, NotUsed> mySource = Source.from(Arrays.asList("1", "2", "3"));
//#draining-to-list-unsafe
// Dangerous: might produce a collection with 2 billion elements!
final CompletionStage<List<String>> strings = mySource.runWith(Sink.seq(), mat);
//#draining-to-list-unsafe
strings.toCompletableFuture().get(3, TimeUnit.SECONDS);
}
};
}
@Test
public void drainSourceToListWithLimit() throws Exception {
new JavaTestKit(system) {
{
final Source<String, NotUsed> mySource = Source.from(Arrays.asList("1", "2", "3"));
//#draining-to-list-safe
final int MAX_ALLOWED_SIZE = 100;
// OK. Future will fail with a `StreamLimitReachedException`
// if the number of incoming elements is larger than max
final CompletionStage<List<String>> strings =
mySource.limit(MAX_ALLOWED_SIZE).runWith(Sink.seq(), mat);
//#draining-to-list-safe
strings.toCompletableFuture().get(1, TimeUnit.SECONDS);
}
};
}
public void drainSourceToListWithTake() throws Exception {
new JavaTestKit(system) {
{
final Source<String, NotUsed> mySource = Source.from(Arrays.asList("1", "2", "3"));
final int MAX_ALLOWED_SIZE = 100;
//#draining-to-list-safe
// OK. Collect up until max-th elements only, then cancel upstream
final CompletionStage<List<String>> strings =
mySource.take(MAX_ALLOWED_SIZE).runWith(Sink.seq(), mat);
//#draining-to-list-safe
strings.toCompletableFuture().get(1, TimeUnit.SECONDS);
}
};
}
}